Merge pull request #397 from emustudio/feature-314

Lot of small refactoring

[#314] audiotape-player: implement TZX loader

Refactoring

[#314] zxspectrum-ula: fix ESC capturing

[#314] audiotape-player: Replace text area with table for tape events, add copy/save logs

[#314] Application, zxspectrum-ula: refactor GUI

Merge pull request #396 from emustudio/feature-314

[#375] ssem-mem: unit tests

[#375] rasp-mem: unit tests

[#375] ram-mem: unit tests

[#375] byte-mem: unit tests

z80-cpu: increase coverage of DecoderImpl.ddInstruction/fdInstruction and fix disassembler bug

Merge pull request #395 from emustudio/feature-314

[#375] Multiple plugins unit tests